Friction-clutch.



EDWIN E. PORTER, OF WOOSTEB, OHIO FRICTION-CLUTCH.

Specification of Letters Patent.

Patented Jan. to, rate.

Application filed January 24, 1910. Serial No. 539,643.

tion-clutch-pulley and is adapted to be' readily-attached to or detachedfrom a driving-shaft of a gas engine, or motor of similar character.

The primary object of the invention is to provide a generally improvedfriction-clutch which will be exceedingly simple in construction, cheapof manufacture, efficient in use, and much better adapted to itsintended purposes than any other device of the same class with which Iam acquainted.

A further object is to provide a frictionclutch having its shiftingmechanism located outside of the driving-pulley and adapted to economizein the length of the projecting end of the shaft required for itsattachment, the device being particularly adapted for attachment to avery short portion of a driving-shaft.

A still further object of the invention is to provide a compactly builtfriction-clutch adapted to carry driving pulleys of various sizes anddimensions.

\Yith the above mentioned ends in view, the invention consists in thenovel construction, arrangement. and combination of parts. hereinafterdescribed, illustrated in one of its embodiments in the accompanyingdrawings, and particularly pointed out in the appended claims.

Referring to the drawings forming a part of this specification, Figurel, isa longitudinal sectional view of a friction-clutch taken throughline 11 of Fig. 3. Fig. "2, a plan view of the same. Fig. 3, across-sectiomil view taken through line 3-3 of Fig. 1. Fig. 4, a planview of the improved split frictionring member.

Similar numerals of reference designate like parts throughout all thefigures of the drawings. I

The improved friction-clutch comprises a clutch-member 1. provided witha bearing sleeve 2, and a surroumling friction-rim 3. The bearingslceve"2, prt-lerably projects laterally beyond the plane of the trictionrimportion 3, as shown, and is adapted to be secured upon the end of adriving-shaft l, in any suitable and convenient manner, preferably, bymeans of a key 5, as shown.

The pulley-clutch -member comprises a sleeve 6, loosely or slidablymounted on the bearingsleeve 2, and a main body or rim )ortion 7,adapted to carry a separately orn'led detachably mounted driving-pulleyS. The driving-pulley is preferably provided about its inner peripherywith an inwardly extending attaching flange 8, se-

cured to'the face of the main body portion 7, of thepulley-clutch-niember by means of a plurality of set-bolts 9. Thepulley-clutchmember is provided on its inner side with a detach-ablymounted split friction-ring 10, carried within the friction-rim 3 of thecooperating clutch member 1, and adapted to be thrown into and out offrictional engagement therewith by the means hereinafter described. Thespllt friction-ring 10, is preferably mounted and detachably secured tothe friction-clutch-member by means of a plurality of inwardly extendingbearinglugs 10, adapted to rest upon and interlock with a plurality ofradially extending flanged bearing-lugs 11,0f the sleeve portion 6, ofsaid pulley-clutch-member. As a means for providing for the expansion ofthe split friction-ring into frictional engagement with the innerperiphery of the friction-rim 3, of the opposing clutch-member, as wellas for preventing the circumferential movement of the friction-ringrelative to the pulley-clutchmember when mounted as above described, anexpanding-bolt member 12, is provided, said bolt-member being adapted tooscillate in a' suitable bearing 7*, of the pulley-clutch-meinber andprovided at oneend with an expandinghead 12, interposed between theadjacent. ends 10*, of the split friction-ring and at the other Wlthalever arni or member 13, having its free end disposed in close proximityto the sleeve portion 6. of the pulley-clutch member. As a means foradjusting the throw of the lever 13, and the consequent oscillation ofthe expanding-bolt-12, and expansion of the split friction-ring 10, thefree end of the lever member 13, is provided with an adjusting bolt H,and as a means for shifting or operating the lever-arm or member 13,whereby the friction-ring may be expanded or contracted for beingbrought into and out of frictional engagement with the adjacentfriction-rim portion 3, of the opposing clutch-member, a shifting collar'15, is slidably mounted upon the sleeve 6, and is provided with anannular wedge-shaped portion 15, adapted to take under and co operatewith'the adjacent end of the ad j listing-bolt 14, when the shiftingcollar ismoved longitudinally on the sleeve 6, by suitable shiftingmechanism.

The shifting-collar 15, may be retained upon the sleeve 6, in anysuitable and convenient manner, the retaining means, in the presentinstance, comprising ahead-plate l6, secured to the end of thebearing-sleeve 2, by means of screws 17 e As a convenient means forshifting the collar 15, a rotatably mounted shifting wheel 18, may beprovided, said wheel being preferably carried by and secured to theshifting-collar 15, by means of a collar or ringportion 19, having itsinner periphery adapted to rest within the annular groove of theshifting-collar 15. The collar or ring portion 19, is preferably made upof two semi-cylindrical parts as shown in Fig. 2,

of the drawings, and may be secured to the shifting-ring- 18, by meansof a plurality of screws 20.

From theforegoing description, taken in connection with theaccompanying. drawings, the operation and advantages of my inventionwill be readily understood.

Having thus described my invention, what I claim and desire to secure byLetters Patent is,

I 1. A friction-clutch, comprising a clutch member provided with aperipheral frictionrim and a laterally extending bearingsleeve,

a pulley-clutch member having a sleeve JIO- vided with radiallyextending bearing lugs and loosely mounted on said bearing'sleeve, asplit frictioirring detachably carried in said bearing lugs,anexpanding-bolt carried by said pulley-clutch member and project- 4'5ing between the adjacent ends of said. trio tron-ring whereby sard ringis expanded and prevented from circumferential movement relative to saidpulley-clutch member, a-

ing said collar, and means for retaining said collar on said lastmentioned sleeve.

2. A "friction-clutch, comprising a clutch membei provided with afriction-rim and a laterally projecting bearing-sleeve, a pulleyclutchmember having a sleeve loosely mounted on said bearing-sleeve and pro--vided with a plurality of radially expanding flanged bearing-lugs, asplit friction-ring provided with a plurality of inwardly extendingbearing-lugs normally resting upon and interlocked with said flangedbearinglugs, an expanding-bolt carried by said pulley-clutch member andprojecting between the adjacent ends of said friction-ring whereby thelatter may be expanded and prevented from circumferential movementrelative to said pulleyclutch member, a lever carried by saidexpanding-bolt and having its free end disposed in close proximity tosaid bearing-sleeve, a collar slidably mounted on the sleeve of saidpulley-clutch member and adapted to cooperate with said lever member,and means for retaining said collar on said last mentioned sleeve.

3. In a friction-clt'ltch the combination with a clutch member providedwith a laterally projecting bearing-sleeve and a surroundingfriction-rim, and a pulley-clutch member having a sleeve loosely mountedon said bearing sleeve and provided with a plurality of radiallyextending flanged bearinglugs; of a split friction-ring provided withinwardly extending bearing lugs normally resting on said flangedbearing-lugs, an expanding-bolt mounted in said pulley-clutch member andprojecting between the adjacent ends. of said friction-ring whereby thelatter is expanded and prevented from circun'iferential movementrelative to said pulley-clutch member, a lever member carried by saidexpanding-bolt, a collar slidably mounted on the sleeve of saidpulley-clutch member and having an annular wedgesha'ped portion adaptedto engage wlth said lever member; and a bearing-head secured to the endof said bearing-slecve and adapted to retain the sleeve of saidpulleyclutch membe' and said collar in operative position.

In testimony whereof I have allixcd my signature, in presence of twowitnesses.

EDWIN E. PORTER lVitnesses O. (l. lunnxmx, (lino. ll. Binmmx

